一个使用PCI总线的简单例子，对于学习PC的IO口直接访问有一定的帮助-A simple example using the PCI bus, for studying direct access to PC-IO port is certainly helpful

Code Warrior 5.1环境下应用VisualizationTool可视化调试的一个例子。-This project is an HC12 ANSI-C project. This example is running the "Demo" program on: -the CodeWarrior HC12 Simulator, (choose "Demo (Simulation)" target), -ICD12 P&E cables interface (ICD12

声音定位，利用三点定位方法，通过三个IO口获取两个延时时间，从而计算出精确位置。-Sound localization, the use of three-point positioning method by three IO port access two delay time to calculate the exact location.